Cisco ONS 15327, User Documentation

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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 5 SONET Topologies
Unidirectional Path Switched Rings
Step 5
Click OK .
The slots/ports display in the SDCC Terminations section.
Step 6
Complete Steps 2 – 5 at each node that will be in the UPSR.
After configuring the SONET DCC, set the timing for the node. For procedures, see the “Set Up ONS
15327 Timing” procedure on page 3-13 . After configuring the timing, enable the UPSR ports as
described in the following procedure.
Procedure: Enable the UPSR Ports
Step 1
Log into the first UPSR node.
Step 2
Double-click one of the cards that you configured as an SDCC termination.
Step 3
Click the Provisioning > Line tabs.
Step 4
Under Status, select In Service for each port that you want enabled.
Step 5 Repeat Steps 2 - 4 for the second card.
Step 6
Click Apply .
You configured a UPSR for one node. Use the same procedures to configure the additional nodes. To
create path-protected mesh networks, see the
“Path-Protected Mesh Networks” section on page 5-42 . To
create circuits, see the “Creating Circuits and VT Tunnels” section on page 6-2 .
5.3.3 Adding and Removing UPSR Nodes
This section explains how to add and remove nodes in an ONS 15327 UPSR configuration. To add or
remove a node, you switch traffic on the affected spans to route traffic away from the area of the ring
where service will be performed. Use the span selector switch option to switch traffic from a UPSR span
at different protection levels. The span selector switch option is useful when you need to reroute traffic
from a UPSR span temporarily to add or drop nodes, perform maintenance, or perform other operations.
Procedure: Switch UPSR Traffic
Step 1
Display the network view.
Step 2
Right-click the span that will be cut to add or delete a node and select Circuits from the shortcut menu
(Figure 5-22) .